129488569 has 8 divisors (see below), whose sum is σ = 148059968. Its totient is φ = 110935440.

The previous prime is 129488533. The next prime is 129488573. The reversal of 129488569 is 965884921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129488569 - 2⁷ = 129488441 is a prime.

It is a super-2 number, since 2×129488569² = 33534579003335522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129482569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18214 + ... + 24304.

It is an arithmetic number, because the mean of its divisors is an integer number (18507496).

Almost surely, 2^129488569 is an apocalyptic number.

It is an amenable number.

129488569 is a deficient number, since it is larger than the sum of its proper divisors (18571399).

129488569 is an equidigital number, since it uses as much as digits as its factorization.

129488569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135.

The product of its digits is 1244160, while the sum is 52.

The square root of 129488569 is about 11379.3044163516. The cubic root of 129488569 is about 505.9145197144.

The spelling of 129488569 in words is "one hundred twenty-nine million, four hundred eighty-eight thousand, five hundred sixty-nine".